Question

did she14. Jillian sold half of her comic books and then bought15 more. She now has 30. With how manybegin?Let c represent the number of comic books with whichshe began.Equation or inequality:Jillian began withCDs.

Answer 1

Step 1:

Given data

Let c represent the number of comic books with which she begin.

When sh sold half of her comic books

Then, she will be left with

$\frac{c}{2}\text{ comic books}$

When she bought 15 more, she now has 30.

15 more, mean you add 15 to c/2 then equate it to 30.

Next, write an equation.

$\frac{c}{2}\text{ + 15 = 30}$

Step 2:

Solve the linear equation to find the value of c.

$\begin{gathered} \frac{c}{2}\text{ + 15 = 30} \\ \text{Collect like terms} \\ \frac{c}{2}\text{ = 30 - 15} \\ \frac{c}{2}\text{ = 15} \\ \text{cross multiply} \\ c\text{ = 15 }\times\text{ 2} \\ c\text{ = 30} \end{gathered}$

Step 3:

Final answer

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